Register New Account

A subscriber can view and comment on articles or posts on this site. By subscribing you agree to be automatically included to receive emails with information about field-related subjects, events, opportunities, products, and services. You can opt out of these emails at any point you choose.

]]>/flyback-transformer-is-not-coupled-inductors/feed/01043Direct 48V to 1V, 200A uP Drive/direct-48v-to-1v-200a-up-drive/
/direct-48v-to-1v-200a-up-drive/#respondFri, 08 Feb 2019 16:04:32 +0000/?p=971Microprocessor Fast Load Current Changes
The microprocessors and SoC Integrated Circuits impose very demanding large and fast load current changes of 10A/usec to 50A/usec yet requiring ultra small transient voltage overshoot to settle very quickly. This is currently handled by up to 12 synchronous buck converter operating in parallel at 5MHz from 12V input resulting in poor efficiency, large size and high cost! This demand is currently met by third party vendors using the same multistage buck approach consisting of over 40 power management companies slicing the 10 billion dollar market among them by providing 12V to 2V . . .

You must be a subscriber to view this content, comment, ask questions, and engage with Prof. Slobodan Ćuk.

Please subscribe here:

Register New Account

A subscriber can view and comment on articles or posts on this site. By subscribing you agree to be automatically included to receive emails with information about field-related subjects, events, opportunities, products, and services. You can opt out of these emails at any point you choose.

]]>/direct-48v-to-1v-200a-up-drive/feed/0971Biggest Impact: Devices or Magnetics?/biggest-impact-devices-or-magnetics/
/biggest-impact-devices-or-magnetics/#respondWed, 06 Feb 2019 15:52:21 +0000/?p=959Comments on Rap Session 1 at APEC 2018
The Rap Sessions 1 last year concluded that “we have all the topologies we need” with flyback and LLC converter declared undisputed champions!? The same moderator and several returning panel members who adjudicated that last year changed this year their hats from topology to become either MAGNETICS or DEVICES experts!? With topologies declared dead on arrival, they invented an artificial contest for Rap Session 1 at this APEC 2018 entitled: BIGGEST IMPACT ON POWER CONVERSION: DEVICES OR MAGNETICS? This is like comparing Apples and Oranges! The only thing they have in common . . .

You must be a subscriber to view this content, comment, ask questions, and engage with Prof. Slobodan Ćuk.

Please subscribe here:

Register New Account

A subscriber can view and comment on articles or posts on this site. By subscribing you agree to be automatically included to receive emails with information about field-related subjects, events, opportunities, products, and services. You can opt out of these emails at any point you choose.

Abstract
For quite a while now, the various “shortcuts” were circulated on LinkedIn media, such as IEEE Power Electronics Society and various websites extolling the virtues of the PWM switch small-signal model! In particular, the claim is made that the “magic shortcuts” could reduce frequency response of a Perfectly Coupled-Inductor Nonisolated SEPIC converter (CI Converter from now on!) to that of a Boost converter as included in a prior discussion to this group . . .

You must be a subscriber to view this content, comment, ask questions, and engage with Prof. Slobodan Ćuk.

Please subscribe here:

Register New Account

A subscriber can view and comment on articles or posts on this site. By subscribing you agree to be automatically included to receive emails with information about field-related subjects, events, opportunities, products, and services. You can opt out of these emails at any point you choose.

Present Power Electronics Systems are built upon and resemble an INVERTED pyramid which is by definition unsustainable and ready to collapse at any moment. Why? At its bottom it has the buck converter as its foundation which than supports the next level single ended isolated converter like flyback and forward to culminate on the third level into bridge type converter with even more switching devices. Consequence: buck converter problems lead to collapse of the whole structure irrespective what switching devices are used.

Register New Account

A subscriber can view and comment on articles or posts on this site. By subscribing you agree to be automatically included to receive emails with information about field-related subjects, events, opportunities, products, and services. You can opt out of these emails at any point you choose.